Pitch smoke suppression modifying agent, smoke suppression modifying pitch and preparation method of pitch smoke suppression modifying agent

Abstract

The invention discloses a pitch smoke suppression modifying agent, smoke suppression modifying pitch and a preparation method of the pitch smoke suppression modifying agent. The pitch smoke suppression modifying agent can comprise a smoke suppression agent, a coupling agent, a smoke suppression agent adjuvant and metallic oxide. The pitch smoke suppression modifying agent provided by the inventionhas a good smoke suppression effect and is efficient and environment-friendly, the maximum smoke density is about 2.88 / m<3>, and the smoke density level is relatively low. After added into pitch, thepitch smoke suppression modifying agent does not have an influence on the property of the pitch, the compatibility between the modifying agent and the pitch is very good, and the added coupling agentenables a pitch system to be more stable. The pitch smoke suppression modifying agent has relatively good high-temperature stability, and does not decompose within 250 DEG C, thereby guaranteeing that the smoke suppression agent does not go bad and lose a smoke inhibiting effect after added into the pitch. The pitch smoke suppression modifying agent has a relatively good smoke inhibiting effect,and has the advantages of being environment-friendly, efficient and free of environmental pollution, and having no harm to operating personnel.

Description

technical field [0001] The invention relates to the technical field of asphalt smoke-suppressing preparations, in particular to an environment-friendly and efficient asphalt smoke-suppressing modifier, smoke-suppressing modified asphalt and a preparation method thereof. Background technique [0002] Due to its good performance characteristics, asphalt concrete pavement has been widely used in high-grade highways, bridge decks and tunnel pavement. At present, my country is in a period of vigorous development of road construction, and a large amount of hot mix asphalt mixture is used every year. When producing asphalt mixture, it is necessary to heat the asphalt from normal temperature to about 160°C, heat the mineral material from normal temperature to 160-180°C, and then mix the asphalt and mineral material. The temperature of the asphalt mixture after mixing is 150-180 ℃, in order to ensure normal paving and rolling, and when the asphalt is heated to such a high temperatur...

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Problems solved by technology

[0003] These asphalt fumes, in addition to polluting the atmospheric environment, also have great harm to the health of operators. Asphalt and its fumes are irritating to the skin and mucous membranes, and have phototoxicity and carcinogenic effects.

For the respiratory system, there is a strong stimulus, which can easily cause symptoms such as chest tightness, abdominal disease, palpitations, headaches, etc., especially when constructing in a relatively closed environment (such as a tunnel), the high temperature of the asphalt mixture and the smoke emitted will increase the construction operation. It is very difficult and even threatens the physical and mental health and life safety of construction workers

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